Labile variations of intraventricular conduction unrelated to rate changes.
D000368:Aged; D003201:Computers; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006334:Heart Function Tests; D006339:Heart Rate; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male